Ordering of compatibility matrix columns

[minhqdao]

The compatibility matrix is currently ordered the following way:

intel-classic 2021.1.2 -> intel-classic 2021.10 -> ... -> intel-classic 2021.2

It would be great to have it ordered according to their numeric values:

intel-classic 2021.1.2 -> intel-classic 2021.2 -> ... -> intel-classic 2021.10

It would make it easier to find the latest release of a compiler.

Screenshot:

[wpbonelli]

closed by #103